Home / 2,229.60-3,072.06-1,639.20

Finding the Fourth Proportional to 2,229.60, 3,072.06 and 1,639.20

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Solution

The fourth proportional to 2,229.60, 3,072.06 and 1,639.20 is: 2,258.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229.60 : 3,072.06 = 1,639.20 : x
  2. Step 2: Convert to fraction form
    2,229.60/3,072.06 = 1,639.20/x
  3. Step 3: Cross multiply
    2,229.60x = 3,072.06 × 1,639.20
  4. Step 4: Simplify right side
    2,229.60x = 5,035,720.75
  5. Step 5: Solve for x
    x = 5,035,720.75/2,229.60
  6. Step 6: Final answer
    x = 2,258.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.